Ontak 2021 Yeongdongdae K-POP Concert was held at COEX, Samsung-dong, Gangnam-gu, Seoul on the afternoon of the 10th.
The group LABOUM Haiin is showing the stage on the day. 2021.10.10.
About LABOUM
La Boum is a 1980 French teen romantic comedy film directed by Claude Pinoteau and starring Sophie Marceau, appearing in her film début.
 Wikipedia